Log raft



S. WOOD LOG RAFT 'July 3, I923.-

Filed July 22. 11921 2 Sheets-Sheet 1 HIMVIEWEPQQR STANLEY WooD July 3, 1923.

s. woob LOG RAFT Filed July 22. 1921 2 Sheets- Sheet 2 INVENTOR $TAN LEY wooa Patented July 3, 1923..

STANLEY woonfor! vror'onre, arriers COLUMBIA,-CANA1)A.

" Loo Barr;

Application filed July 22,1921 Serial No. 486,831.

To all whom it may concern:

Be it known that I, STANLEY WOOD, a subject of the King of Great Britain, and a resident of the city of Victoria, in the.

Province of British Oolumbia,Canada, have invented certain new and useful Improvements in Lo Rafts, of'which the following is a specification.

My invention relates to improvements in log rafts, and the object of my invention is to devise a raft for the transportation of 'logs the draft of which may be controlled I even draft to be obtained.

and adjusted to suit varying depths of wator for loading or discharging and which is perfectly fiat bottomed so as to enable an I attain this object by the construction illustrated in the accompanying drawings in I which- I Fig. l is a plan view of the raft, empty. Figure 2 is an end view of the Taft loaded.

Figure 3 is a fragmentary perspective 4 and 5, forming the floor of the raft on which the body of logs 6 is supported. The

side booms 1 and 2 are each provided with a plurality of spaced vertical openings 7,

while the end booms 3 and 4: have vertical openings 8 provided in them adjacent their opposite ends, and the ends'of' the side booms are connected to the contiguous ends of the end booms by double chains 9, as shown in Fig. 1, one chain being secured atone end to the end boom and having its opposite end passed up through the end opening of the side boom, while the other chain is fastened at one end to the side boom and hasits other end passed up through the end opening of the end boom; The free ends of each of the chains are provided with a cross bar, indicated by the numeral 10, which when straddled across its Figure 6 is a view of one respective opening, prevents'the chain from dropping back through the opening.-

The transverse intermediate booms 5, which are of such length asto fit'bet'ween the side booms 1 and 2 areas many in numher as there are openings 7, exceptingv the end openings, and each'boom is provided at its opposite ends with chains 11 and'lQ, respectively, thefreeends of whichare passed up through the respective openings 7 each v item free end, being Provided with bar 13" 7 adapted to be-seated in a notch 14 formed in the upper edge of a cylindrical lin ing 15 with which each opening is fitted so that the chains are thus prevented from inadvertently dropping back through the respective openings.

formed by the endbooms and transverse booms which is provided with floating side booms 1 and 2 which are attached to the raft floor by a plurality of chains. all of which may be adjusted lengthwise.

Before loading theraft floor'with logs, the

minimum depth of water through which the raft has to pass, is ascertained, the chains connectlng the raft floor and side booms It will thus be seen that. a raft flooris are adjusted, so that when the floor is submerged by its superimposed load the chains will be held taut between the floor and the side booms, and theside booms will be left floating.

loaded that it may besafely towed without touching bottom as the boom floor is per- .fectl'y. level and the draft thereof is prescribed within the predetermined limits.

The side booms and their depending chains may be taken as a loading gauge for J the raft, the side booms remaining afloat only so long as the load is lessthan the By-this means the raft will be'so I amount required to 'keep 7 within a given draft.

What I claim as-my invention is 1. A log raft comprising side booms, a log supportingfioor suspended between said booms, and means for raising or lowering said floor.

booms disposed transversely across and adbooms disposed transversely {between the side booms, flexible connections between the ends of the end-boomsand'the side booms and between the side booms and the respec-I tive spaced booms, and means whereby the length of said connection may be varied 2. A. log raft comprising side booms, end f A ,jacent the ends of the sidebooms, spaced to raise or lower the end booms and the :1 comprising side booms and floor booms suspended from the side booms, the suspend,- ing means being effective to adjust the raft;

and serving in conjunction with the side booms as a loading gauge for indicating the degree towhich'the raft may be'loaded 10 Withinagiven draft.

Dated at VictQria B. 'C., this 7 day of.

July, 1921.

I i STANLEY WOOD. 

